remove unused imports

src/compaction/cli.py

@@ -4,7 +4,7 @@
 import warnings
 from functools import partial
 from io import StringIO
-from typing import Optional, TextIO
+from typing import TextIO
 
 import click
 import numpy as np  # type: ignore

src/compaction/compaction.py

@@ -1,6 +1,4 @@
 #! /usr/bin/env python
-from typing import Optional
-
 import numpy as np  # type: ignore
 from scipy.constants import g  # type: ignore